Update OrmLite.Core.ttinclude

Added back namespace field which is relied on by OrmLite.Poco.tt

Author: laurencee

src/T4/OrmLite.Core.ttinclude

@@ -81,6 +81,7 @@
 */
 
 string ConnectionStringName = "";
+string Namespace = "";
 string ClassPrefix = "";
 string ClassSuffix = "";
 string SchemaName = null;
@@ -2605,4 +2606,4 @@ class Manager {
 /*
     End of Manager.tt
 */
-#>
+#>